Yes it was. Dyno'd at 819 on 18lbs but my C4 never stood a chance. It blew twice and never even made it to the track. I was gonna have to keep spending money on it and the underhood temps were bad. I tried different fans, installed an electric water pump and had a cowl hood. Non of that helped. The best fan was the OEM one but it couldn't keep it cool at idle. So... I sold the drivetrain and put the money into my new home. I thought I'd have less headaches with a stock H/C/I but boy was I wrong.